CN103618422B - Electromagnetic drive fan device - Google Patents
Electromagnetic drive fan device Download PDFInfo
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- CN103618422B CN103618422B CN201310718425.1A CN201310718425A CN103618422B CN 103618422 B CN103618422 B CN 103618422B CN 201310718425 A CN201310718425 A CN 201310718425A CN 103618422 B CN103618422 B CN 103618422B
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- permanent magnet
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- propeller
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Abstract
The present invention provides a kind of electromagnetic drive fan device, is installed in aero-engine, including wheel disc, permanent magnet, fan blade, hollow cylinder steelframe and coil windings；Described wheel disc is drum, is within it embedded with the permanent magnet quadrupole magnetic flux with generation symmetry of annular on week, and is fixed with multiple fan blade on their outer circumference, thus constitutes fan propeller；Coil windings is overlapped together by split-phase, packet, it is then attached on circumferential slot or the radial direction yoke of iron core, it is monolithically fabricated an annulus to be fixed on described cylinder steelframe, thus constitute fan stator, fan stator is configured in fan propeller, permanent magnet is wrapped in coil windings, there is the gap of certain size between permanent magnet and coil windings, constitutes gap magnetic field.The present invention can realize fan propeller drive electromagnetization, without axiation, improve the stability of fan and controlled nargin, significantly alleviate fan weight, thus improve aerial engine fan efficiency and overall efficiency, alleviate engine weight and raising thrust-weight ratio.
Description
Technical field
The present invention relates to Electromagnetic Drive Technology field, specifically, the present invention be more particularly directed to a kind of electromagnetism and drive
Dynamic fan assembly.
Background technology
Following advanced aero engine will be towards many electricity or full power technology development, and American and Britain, Fa Deng state all open
Move more electric engin project, it is contemplated that obtain actual application 2015～the year two thousand twenty.The U.S. exists
In the works, propose research for the first time with magnetic suspension bearing is the most electric of support to the IHPTET of formulation in 1988
Or full electricity aero-engine, and in 10 years, progress have developed and meet the high-temp magnetic levitation axis that heaven requires
Hold system.One of this technology crucial new and high technology having become 21 century advanced aero engine.
So-called magnetic suspension many electricity aero-engine, is to replace tradition with magnetic suspension bearing in aero-engine
Rolling bearing, provide required power supply with the starting/generator being integrated on engine spindle, and use
All-electric driven accessary replaces mechanical transmission annex, it is achieved engine and the complete electrified of aircraft pass
Dynamic.The result of study of NASA shows, this technology can be by the weight saving 15% of engine and improve 5%
Efficiency, and the reliability of engine, maintainability are greatly improved, and are that following high thrust-weight ratio engine is first
The power transmission solution of choosing.
On following many electricity aircrafts, the air actuation system of aircraft, environmental control system, wing anti-ice
System, brake system, mechanical-hydraulic flight control system etc. all will use driven by power, all electricity of aircraft
Power is all provided by more electric engin.In addition, many power technologies can improve the thrust-weight ratio of engine, thus
Increase the weapon load of military aircraft；Can be used for generating laser or microbeam, as airborne high energy beam weapon
The energy；More electric engin can also be substantially improved the comfortableness of following seating plane, meets the electricity consumption of client
The needs of contour Quality of service.
From the foregoing, it will be observed that following novel aero-engine will develop towards many power technologies direction, aero-engine
The collection generator of one relatively high power of upper nesting and the direct current generator of motor function one are meeting need
Want.Current application design is to nest together, embedded starting/generator and turbine by armature
Assembly is placed on turbine interior, is fixed together with rotating shaft, yoke and excitation component is placed on outside turbine, and
Casing wall function one.
Based on many electricity aircrafts and more electric engin technology, it is necessary to develop a kind of novel employing Electromagnetic Drive
The fan assembly of mode and system, yet there are no this kind and use electromagnetic mode to drive engine blower or pressure
The relevant report of mechanism of qi, it has technical novelty and feasibility.
Summary of the invention
It is an object of the invention to provide a kind of electromagnetic drive fan device, to realize what fan propeller drove
Electromagnetization, without axiation, improve fan properties.
To achieve these goals, the technical scheme of a kind of electromagnetic drive fan device that the present invention provides is:
A kind of electromagnetic drive fan device is installed in aero-engine, and it includes wheel disc, permanent magnet, wind
Fan leaf, hollow cylinder steelframe, coil windings；Described wheel disc is drum, and within it week is upper embedded
There is the described permanent magnet of annular to produce symmetrical quadrupole magnetic flux, and be fixed with multiple institute on their outer circumference
State fan blade, thus constitute fan propeller；Described coil windings is overlapped together by split-phase, packet,
It is then attached on circumferential slot or the radial direction yoke of iron core, is monolithically fabricated an annulus and is fixed on described cylinder steel
On frame, thus constituting fan stator, described fan stator is configured in described fan propeller, described permanent magnetism
Body is wrapped in described coil windings, exists between certain size between described permanent magnet and described coil windings
Gap, constitutes gap magnetic field.
The most described fan propeller include laying respectively at described fan stator both sides first order fan propeller,
Second level fan propeller, to constitute a low-pressure compressor system.
Analyzing and understand, the electromagnetic drive fan device that the present invention provides can realize the electricity that fan propeller drives
Magnetization, without axiation, the stability of raising fan and controlled nargin, significantly alleviate fan weight, thus carry
High aerial engine fan efficiency and overall efficiency, alleviate engine weight and improve thrust-weight ratio.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the embodiment of the present invention；
Fig. 2 is the side-looking structural representation of the embodiment of the present invention.
Detailed description of the invention
With detailed description of the invention, the present invention is described in further details below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, one embodiment of the invention includes first order fan propeller 1, second level wind
Fan rotor 2, fan stator 3, fan blade 4, coil windings 6, wheel disc 7.First order fan propeller 1,
Second level fan propeller 2 constitutes the low-pressure compressor system of aero-engine, and the two is symmetrically located at one-level
Fan stator 3 both sides, and include multiple fan blade 4 being fixed on wheel disc 7 circumference respectively.Wheel disc 7
On be embedded with annulus entirety shape permanent magnet to produce symmetrical quadrupole magnetic flux, coil windings 6 is positioned at permanent magnet
Inside, time in coil windings 6 by electric current, the magnetic field interaction of electric current and permanent magnet produces the most outstanding
Buoyancy, it is achieved the radial direction stable suspersion of two rotors.Based on permanent-magnet brushless DC electric machine excitation principle,
The brushless driving of electronic switch commutator it is made up of semiconductor, using the permanent magnet as magnetic field as rotor,
Armature is stator, and becoming conventional pivot-rotatable type is field-rotatable type, drives two-stage fan to turn by the way of electrical excitation
Son rotates.By the size of electric current in control coil winding 6 just can control radial suspension force size and
The size of rotation speed of the fan；The rotation of fan propeller can be controlled by sense of current in control coil winding 6
Turn direction.
More specifically, it is fan stator 3 between first order fan propeller 1 and second level fan propeller 2,
Fan stator 3 has the effect of three aspects: one, as the part of engine air flowing passage；
Two, as main load parts, engine turns, all loads on stator all pass through fan stator 3 and pass
To casing, joint is installed；Three, the root of two-stage fan propeller is provided to fix and support.
Countless coil windings 6 by split-phase, packet overlap together, be then attached to iron core circumferential slot or
Radially on yoke, it is monolithically fabricated an annulus.The root of annulus is the cylinder steelframe that fan stator 3 is stretched
5, cylinder steelframe 5 boring, under conditions of proof strength, can effectively alleviate the weight of assembly.
Fan blade 4 uses tenon form, such as swallow-tail form tenon, is fixed on above wheel disc 7.With tradition
Unlike engine blower, wheel disc 7 is not fixed on engine shaft, but within it on ring wall
Mosaic magnet, permanent magnet is wrapped in coil windings 6, exists certain between permanent magnet and coil windings 6
The gap of size, constitutes gap magnetic field.Additionally, with another significantly different part of conventional engines fan
Being, first order fan propeller 1, second level fan propeller 2 and one-level fan stator 3 center are all empty
Core structure, does not has engine low-pressure spool system.Further, first order fan propeller 1 and second level fan
Rotor 2 can realize rotary-die type, and this is a progress to compare conventional engines fan.
When the embodiment of the present invention is applied to many electricity aircrafts, its course of work approximately as:
Power supply is made with fuel cell unit nested on many electricity aircrafts (under engine stabilizer work the most saturated),
Powering to coil windings 6, the permanent magnet on wheel disc 7 starts excitation, promote first order fan propeller 1,
Second level fan propeller 2 rotates, it is achieved first order fan propeller 1, the starting of second level fan propeller 2.
Power supply is powered to embedded starting/generator simultaneously, and turbine rotates and starts subsequently.At this moment whole it is switched on
The work of motivation, is then cut off powering to turbine, and folk prescription is yearned for fan loop 6 and powered, until fan is (also
The i.e. embodiment of the present invention) and turbine reach slow train rotating speed np, this process is referred to as starting process.
After fan and turbine start, the flow field of engine air flowing is set up.When air-flow meets combustion chamber point
When fire requires, combustion chamber ignition, turbine produces power increase, connects embedded starting/generator and fan
Supplying channels.So fuel cell and embedded starting/generator supplies to coil windings 6 simultaneously
Electricity, rotation speed of the fan is continued to accelerate by slow train rotating speed np, the most progressively strengthens combustion chamber fuel delivery, until whirlpool
Wheel power mates with compressor power.Now the electricity of fuel cell unit exhausts the most substantially, closes fuel
The battery pack power supply to fan, single rotating speed n1 that just can be maintained fan by embedded starting/generator, wind
Fan enters steady working condition, keeps this rotating speed constant.
Under fan steady-working state, increasing the fuel delivery of combustion chamber, turbine power increases, and rotating speed increases
Add, thus the power of embedded starting/generator increases the most accordingly.At this moment keep fan electrical current size constant,
Connect fuel cell and the transmission channel of embedded starting/generator, thus can realize fuel cell is filled
Electricity.
The location regulation of fan is dependent on magnetic field force and is accurately positioned.When fan is in axial orientation side
When trickle deflection angle occurs, just fed back by the dcs of more electric engin, suitably
Increase the electric current by this side, increase electromagnetic force of repelling each other, so that the deflection angle of fan is classified as zero, it is achieved
The stable position of fan running.On the other hand, the change of rotation speed of the fan is also to pass through dcs
Control the size of electric current, thus realize the regulation of rotating speed.
When conventional engines throttles, or when being switched by different duties, it is easy to destroy
Compressor (fan) and the equilibrium running line of turbine, cause the generation of compressor surge.And the present invention is real
Execute example owing to eliminating shaft transmission system, will not be by with turbine match and cooperative constraint, surge is sent out
Raw probability is the least, simultaneously because secure permanent magnet on the wheel disc of fan, its natural frequency of vibration improves accordingly,
The more difficult appearance of possibility that mechanical oscillation occur.
And when electromagnetic fan surge occurs for a certain reason, sensor sends surge signal, at this moment only
The electric current by fan need to be strengthened by moment, improve the rotating speed of fan, just automatically exit from surge.This
Regulation, owing to being not belonging to mechanical adjustment, uses electromagnetic induction regulation, has quick, accurate, full-automatic
Advantage.
It should be noted that owing to fan power is relatively big, so the load of whole electromagnetic system is relatively big, cause electric current
Bigger, thus voltage drop on the line, energy dissipation are bigger relative to for direct current generator, it is right to need
Coil windings 6 carries out heat radiation protection effectively.
The embodiment of the present invention is applicable to the low-pressure compressor of aero-engine the most as mentioned above, equally
Meet the needs of high-pressure compressor；Military unmanned air vehicle, trainer aircraft and fighter plane can not only be applied to, also
Can be generalized on domestic gas turbine, commercial affairs machine, business airplane and airliner.
To sum up, the present invention has the advantage that:
Simple in construction, weight alleviates significantly.Aero-engine uses the present invention, by traditional machine driving
Change Electromagnetic Drive into, its most prominent being structurally characterized in that: design without axiation, i.e. eliminate driving engine
Main shaft, also been removed the series of complex structures such as drum barrel, bearing, oil-way lubrication simultaneously.These metals are tied
Structure compares coil windings and the permanent magnet that the present invention uses, and size is big, weight is the heaviest.Therefore, originally
Invention can make engine components weight significantly be alleviated.
Reliability and maintainability are greatly improved.Using the present invention, aero-engine can be removed engine and pass
Dynamic main shaft, it is not necessary to remove to consider the strength problem of main shaft, wheel disc, bearing etc., significantly reduce structure
The component difficulty of design, is useful to improving reliability, additionally also reduces fan propeller and stator
Installation and removal difficulty, maintainability is convenient.
Engine thrust-weight ratio is improved.Thrust-weight ratio is the most important performance parameter of engine.The present invention exists
Thering is provided under power and the thrust of equivalent, its weight can alleviate significantly, thus the thrust-weight ratio of engine obtains
Obvious raising.
Rotary fan is promoted engine compresses efficiency.The rotating speed size and Orientation of the present invention can realize flexibly,
Quickly regulation, such that it is able to realize engine compressor to rotary-die type, to the compression effect improving compressor
Rate, minimizing compressor progression, indirectly reduce engine weight and improve thrust-weight ratio, having important meaning.
Stress concentration effect substantially weakens.Owing to blade rotates the centrifugal force produced relatively greatly, conventional engines
On, the strain of wheel disc core is big, and stress is concentrated, it is generally required to use the measure of " drum stopping-off piece " to carry
High intensity and stability.In the present invention, permanent magnet is fixed on wheel disc inwall, and its weight and centrality are just
Can play similar effect, stress concentration effect substantially weakens.
Improve the surge margin of engine work.Due to the fact that and eliminate shaft transmission system, will not be by same
Turbine match and cooperative constraint, the probability that surge occurs is the least, and when due to the fact that certain is former
During because surge occur, sensor sends surge signal, at this moment only need to be strengthened by moment and pass through electromagnetic fan
Electric current, improve rotating speed, it is possible to automatically exit from surge.
As known by the technical knowledge, the present invention can be by other essence without departing from its spirit or essential feature
Embodiment realize.Therefore, embodiment disclosed above, for each side, is all to lift
Example illustrates, is not only.All within the scope of the present invention or within being equal to the scope of the present invention
Change and be all included in the invention.
Claims (2)
1. an electromagnetic drive fan device, is installed in aero-engine, it is characterised in that: include wheel
Dish, permanent magnet, fan blade, hollow cylinder steelframe and coil windings；Described wheel disc is drum,
Within it it is embedded with the described permanent magnet quadrupole magnetic flux with generation symmetry of annular on week, and in its periphery
On be fixed with multiple described fan blade, thus constitute fan propeller；Described coil windings by split-phase, point
Group overlaps together, and is then attached on circumferential slot or the radial direction yoke of iron core, is monolithically fabricated an annulus solid
Being scheduled on described cylinder steelframe, thus constitute fan stator, described fan stator is configured at described fan and turns
In son, described permanent magnet is wrapped in described coil windings, deposits between described permanent magnet and described coil windings
In the gap of certain size, constitute gap magnetic field.
Electromagnetic drive fan device the most according to claim 1, it is characterised in that: described fan turns
Attached bag includes and lays respectively at the first order fan propeller of described fan stator both sides, second level fan propeller, with
Constitute a low-pressure compressor system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310718425.1A CN103618422B (en) | 2013-12-23 | 2013-12-23 | Electromagnetic drive fan device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310718425.1A CN103618422B (en) | 2013-12-23 | 2013-12-23 | Electromagnetic drive fan device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103618422A CN103618422A (en) | 2014-03-05 |
| CN103618422B true CN103618422B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310718425.1A Active CN103618422B (en) | 2013-12-23 | 2013-12-23 | Electromagnetic drive fan device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103618422B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016065737A1 (en) * | 2014-10-30 | 2016-05-06 | 熵零股份有限公司 | Electromagnetic coupling impeller counter-rotating fluid mechanism and thermal power system using same |
| CN107435591B (en) * | 2016-05-27 | 2019-07-02 | 中国航发商用航空发动机有限责任公司 | Aero-Engine Start system, starting method and aero-engine |
| CN107313876B (en) * | 2017-07-04 | 2019-06-04 | 南京航空航天大学 | Contain fan outside a kind of magnetic suspension for aviation turbofan engine |
| WO2021177909A1 (en) * | 2020-03-04 | 2021-09-10 | Topcu Suleyman | Open center electromagnetic propeller system and operation method thereof |
| CN113357046A (en) * | 2020-03-06 | 2021-09-07 | 许承革 | Turbo-electric aircraft engine |
| CN113086219B (en) * | 2021-04-29 | 2022-08-23 | 中国航空发动机研究院 | Shaftless electric engine for aircraft, control method and aircraft |
| CN113958423B (en) * | 2021-10-20 | 2022-11-22 | 中国航空发动机研究院 | Bypass ratio adjustable fan for hybrid pure electric aircraft and aero-engine |
| CN114198201A (en) * | 2021-12-14 | 2022-03-18 | 重庆交通大学绿色航空技术研究院 | Hydrogen-electricity hybrid power turbine propeller fan engine |
| CN114198202B (en) * | 2021-12-14 | 2023-04-07 | 重庆交通大学绿色航空技术研究院 | Hydrogen-electricity hybrid power turbofan engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2414249Y (en) * | 2000-01-24 | 2001-01-10 | 台达电子工业股份有限公司 | Magnetic suspension bearing device |
| CN100472916C (en) * | 2003-09-22 | 2009-03-25 | 台达电子工业股份有限公司 | A motor without bearing |
| CN201238240Y (en) * | 2008-06-18 | 2009-05-13 | 北京佩特来电器有限公司 | Fan group used for automobile generator rotor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006177406A (en) * | 2004-12-21 | 2006-07-06 | Kiko Kagi Kofun Yugenkoshi | Magnetic auxiliary bearing |
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2013
- 2013-12-23 CN CN201310718425.1A patent/CN103618422B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2414249Y (en) * | 2000-01-24 | 2001-01-10 | 台达电子工业股份有限公司 | Magnetic suspension bearing device |
| CN100472916C (en) * | 2003-09-22 | 2009-03-25 | 台达电子工业股份有限公司 | A motor without bearing |
| CN201238240Y (en) * | 2008-06-18 | 2009-05-13 | 北京佩特来电器有限公司 | Fan group used for automobile generator rotor |
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| Publication number | Publication date |
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| CN103618422A (en) | 2014-03-05 |
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